Teori Refleksi Dalam Pembelajaran

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⎛ 255 ⎞ PSNR = 20 log 10 ⎜ (2) ⎟ ⎝ RMSE ⎠ Typical PSNR values range between 20 and 40. They are usually reported to two decimal points (e.g., 25.47). The actual value is not meaningful, but the comparison between two values for different reconstructed images gives one measure of quality. The MPEG committee used an informal threshold of 0.5 dB PSNR to decide whether to incorporate a coding optimization because they believed that an improvement of that magnitude would be visible. Some definitions of PSNR .